JP7553237B2 - Cosmetics - Google Patents

Description

The present invention relates to cosmetics, and more specifically to cosmetics that do not contain surfactants or do not contain an amount of surfactant that would be sufficient to emulsify an oil phase and an aqueous phase with surfactants alone.

Oil-in-water or water-in-oil emulsions, which are usually used in cosmetics, stably mix aqueous and oily components due to the emulsifying action of the surfactant added. However, preparations emulsified with surfactants, such as sunscreen preparations containing UV absorbers, have the problem that they are re-emulsified by sweat or water after application to the skin and run off, because the oil-soluble UV absorber is emulsified in water using the surfactant. In addition, because surfactants have a unique stickiness, attempts have been made to reduce the amount of surfactants as much as possible or to completely remove them. Furthermore, with the increase in consumers who place more importance on skin-friendliness in recent years, there is an increasing demand for preparations that do not contain or contain very little surfactants, which can sometimes cause irritation depending on the user's constitution.

For example, Patent Documents 1 and 2 describe emulsion compositions containing a water-swellable layered silicate, an organically modified layered silicate clay mineral, oil, and water. Patent Document 3 describes an oil-in-water emulsion containing an alkylene oxide derivative having a specific structure, silica powder, an oil phase, and a water phase.

Meanwhile, Patent Document 4 describes a composition that does not contain any surfactant or emulsifier and that is composed of an aqueous phase containing only one type of gelling agent selected from the group consisting of agar, xanthan gum, cellulose, alginates, and polyoses selected from semi-synthetic derivatives of cellulose, and acrylic acid polymers including benzene residue-free acrylic acid homopolymers, and a lipid phase containing at least one consistency factor selected from the group consisting of wax, saturated hydrocarbons, monoglycerides, diglycerides, triglycerides, and vegetable fats having a melting point of 50°C or higher.

Patent Document 5 describes a cosmetic composition that includes an aqueous phase gelled with a synthetic polymer hydrophilic gelling agent, and at least one oil phase gelled with at least one lipophilic gelling agent selected from a granular gelling agent, an organopolysiloxane elastomer, a semi-crystalline polymer, a dextrin ester, and a mixture thereof.

JP 2006-001913 A JP 2006-151851 A JP 2007-332037 A Special Publication No. 11-505822 JP 2016-509052 A

The compositions described in Patent Documents 4 and 5 contain an aqueous phase gelling agent in the aqueous phase and an oil phase gelling agent in the oil phase, but the compositions described in these documents do not contain polar oils such as ultraviolet absorbers, or contain them at low concentrations. Sunscreen preparations that contain a high concentration of so-called ultraviolet absorbers have difficulty maintaining emulsion stability even when surfactants are added, and it is extremely difficult to maintain stability in preparations that do not contain surfactants.

The present invention has been made in consideration of the above circumstances, and aims to provide a cosmetic that does not contain a surfactant or does not contain an amount of surfactant that would be sufficient to emulsify the oil phase and the water phase with the surfactant alone, and that can ensure stability, has good water resistance, and is less sticky, even if it contains a certain amount of polar oil.

The cosmetic preparation of the present invention is a cosmetic preparation that does not contain a surfactant or does not contain an amount of a surfactant that can emulsify an oil phase and an aqueous phase with the surfactant alone,
(A) an aqueous phase including an aqueous phase gelling agent;
(B) an oil phase containing an oil phase gelling agent;
The aqueous phase and the oil phase form a mixture,
The oil phase contains 30 mass% or more of (C) a polar oil,
The cosmetic has a static viscosity of 13,000 mPa·s or more.

(C) It is preferable that the polar oil contains an ultraviolet absorber.

(B) The hardness of the oil phase gelled with the oil phase gelling agent is preferably 40 N or more.

(B) The oil phase gelling agent is preferably a dextrin fatty acid ester, a glyceryl fatty acid ester, an amino acid gelling agent, a sucrose fatty acid ester, a fatty acid or a salt thereof, or a silicone wax.

The dextrin fatty acid ester is preferably dextrin palmitate or dextrin (palmitate/ethylhexanoate).

The glyceryl fatty acid ester is preferably glyceryl (behenate/eicosanedioate).

The amino acid gelling agent is preferably at least one selected from N-lauroyl-L-glutamic acid dibutylamide, N-2-ethylhexanoyl-L-glutamic acid dibutylamide, and polyamide 8.

The fatty acid is preferably 12-hydroxystearic acid.

(B) The oil phase gelling agent is preferably contained in an amount of 2% by mass or more based on the total amount of the oil phase.

The cosmetic preparation of the present invention is a cosmetic preparation that does not contain a surfactant or does not contain an amount of a surfactant that can emulsify an oil phase and an aqueous phase with the surfactant alone,
(A) an aqueous phase including an aqueous phase gelling agent;
(B) an oil phase containing an oil phase gelling agent;
The aqueous phase and the oil phase form a mixture,
The oil phase contains 30 mass% or more of (C) a polar oil,
Since the cosmetic has a static viscosity of 13,000 mPa·s or more, even if it contains a certain amount of polar oil, it can ensure stability, have good water resistance, and be less sticky.

The cosmetic preparation of the present invention is a cosmetic preparation that does not contain a surfactant or does not contain an amount of a surfactant that would enable emulsification of an oil phase and an aqueous phase with the surfactant alone (hereinafter, these will be collectively referred to simply as a surfactant-free cosmetic preparation, or simply as a cosmetic preparation),
(A) an aqueous phase including an aqueous phase gelling agent;
(B) an oil phase containing an oil phase gelling agent;
The aqueous phase and the oil phase form a mixture,
The oil phase contains 30 mass% or more of (C) a polar oil,
The cosmetic has a static viscosity of 13,000 mPa·s or more.
Each component will be described in detail below.
In this specification, PEG is an abbreviation for polyethylene glycol, EO is an abbreviation for ethylene oxide, PO is an abbreviation for propylene oxide, POE is an abbreviation for polyoxyethylene, POP is an abbreviation for polyoxypropylene, and VP is an abbreviation for vinylpyrrolidone.

Here, in a cosmetic composition that does not contain a surfactant in an amount that would enable the oil phase and the water phase to be emulsified by the surfactant alone, the specific amount of surfactant in an amount that would enable the oil phase and the water phase to be emulsified by the surfactant alone is 1% by mass or less, preferably 0.7% by mass or less, and more preferably 0.5% by mass or less, relative to the total amount of the cosmetic composition.

(A) Aqueous Phase Gelling Agent The aqueous phase contains (A) an aqueous phase gelling agent. Examples of (A) the aqueous phase gelling agent include cellulose-based polymers such as cellulose gum, methyl cellulose, nitrocellulose, ethyl cellulose, methylhydroxypropyl cellulose, hydroxyethyl cellulose, sodium cellulose sulfate, hydroxypropyl cellulose, crystalline cellulose, and cellulose powder, and alginic acid-based polymers such as sodium alginate and propylene glycol alginate.

Other examples include plant-based polymers such as gum arabic, tragacanth, galactan, carob gum, guar gum, karaya gum, carrageenan, xanthan gum, pectin, agar, quince seed, and algae colloid (brown algae extract); microbial polymers such as dextran, succinoglucan, and pullulan; animal polymers such as collagen, casein, albumin, and gelatin; and starch-based polymers such as starch (rice, corn, potato, and wheat), carboxymethyl starch, and methylhydroxypropyl starch.

Further examples include vinyl polymers such as polyvinyl methyl ether and carboxyvinyl polymers, polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, acrylic polymers such as polyethyl acrylate and polyacrylamide, polyethyleneimine, cationic polymers, inorganic water-soluble polymers such as bentonite, magnesium aluminum silicate, laponite, hectorite, and silicic anhydride, PEG-240/decyltetradeceth-20/hexamethylene diisocyanate copolymers, (dimethylacrylamide/sodium acryloyldimethyltaurate) crosspolymers, (sodium acrylate/acryloyldimethyltaurate) copolymers, (alkyl acrylate/steareth-20 methacrylate) copolymers, and (ammonium acryloyldimethyltaurate/VP) copolymers.

The aqueous phase gelling agent (A) is preferably contained in an amount of 0.2 to 4 mass% relative to the total amount of the aqueous phase, and more preferably 0.4 to 3 mass%. By containing the aqueous phase gelling agent (A) in an amount of 0.24 mass% relative to the total amount of the aqueous phase, an aqueous phase with an appropriate viscosity can be obtained.

(B) Oil Phase Gelling Agent The oil phase contains (B) an oil phase gelling agent. (B) The oil phase gelling agent is preferably a dextrin fatty acid ester, a glyceryl fatty acid ester, an amino acid gelling agent, a sucrose fatty acid ester, a fatty acid or a salt thereof, or a silicone wax.

The dextrin fatty acid ester is an ester of dextrin or reduced dextrin with a higher fatty acid, and can be any that is commonly used in cosmetics without any particular restrictions. It is preferable to use dextrin or reduced dextrin with an average degree of glycopolymerization of 3 to 100. In addition, it is preferable to use a saturated fatty acid having 8 to 22 carbon atoms as the constituent fatty acid of the dextrin fatty acid ester. Specific examples include dextrin palmitate, dextrin oleate, dextrin stearate, dextrin myristate, and dextrin (palmitate/2-ethylhexanoate).

Glyceryl fatty acid esters are esterification reaction products obtained by reacting glycerin, a dibasic acid having 18 to 28 carbon atoms, and a fatty acid having 8 to 28 carbon atoms (excluding dibasic acids), and any that are commonly used in cosmetics can be used without any particular restrictions. Specific examples include glyceryl (behenic acid/isostearic acid/eicosane dioic acid), glyceryl (behenic acid/eicosane dioic acid), polyglyceryl-10 (behenic acid/eicosane dioic acid), etc.

Examples of amino acid gelling agents include N-lauroyl-L-glutamic acid dibutylamide (dibutyl lauroyl glutamide), N-2-ethylhexanoyl-L-glutamic acid dibutylamide (dibutyl ethylhexanoyl glutamide), polyamide-8, polyamide-3, etc.

Sucrose fatty acid esters in which the fatty acid is linear or branched, saturated or unsaturated, and has 12 to 22 carbon atoms can be preferably used. Specific examples include sucrose caprylate, sucrose caprate, sucrose laurate, sucrose myristic acid, sucrose palmitate, sucrose stearate, sucrose oleate, and sucrose erucate.

Fatty acids that are solid at room temperature can be used, such as myristic acid, palmitic acid, stearic acid, behenic acid, and 12-hydroxystearic acid. Examples of fatty acid salts include calcium salts, magnesium salts, and aluminum salts of these fatty acids.

The silicone wax is not particularly limited as long as it is a raw material that can be normally incorporated into cosmetics, but examples include highly polymerized methylpolysiloxanes such as highly polymerized dimethylpolysiloxane, highly polymerized methylphenylsiloxane, highly polymerized methylvinylpolysiloxane, highly polymerized amino-modified methylpolysiloxane, alkyl-modified silicones (e.g., stearyl dimethicone, alkyl (C30-C45) methicone, etc.), polyamide-modified silicones, and long-chain alkoxy-modified silanes (stearoxytrimethylsilane, etc.).

The amount of the oil phase gelling agent (B) is preferably adjusted so that the hardness of the oil phase gelled with the oil phase gelling agent (B) is 40 or more. The hardness of the oil phase is preferably 40 to 300 N, more preferably 45 to 280 N, and even more preferably in the range of 50 to 270 N. By having the hardness of the oil phase gelled with the oil phase gelling agent (B) in the range of 40 to 300 N, the stability of the cosmetic composition that does not contain a surfactant can be maintained. The amount of the oil phase gelling agent (B) can be appropriately changed depending on the type of gelling agent used, but is generally 2 to 20% by mass, more preferably 4 to 16% by mass, and even more preferably 6 to 14% by mass, of the total amount of the oil phase.

The aqueous phase containing the aqueous phase gelling agent (A) and the oil phase containing the oil phase gelling agent (B) form a mixture in the cosmetic. Here, the mixture means that the aqueous phase containing the aqueous phase gelling agent (A) and the oil phase containing the oil phase gelling agent (B) are mixed together to form a homogeneous state in appearance.

(C) Polar oil (C) is not particularly limited as long as it is normally used in cosmetics, medicines, and foods. The IOB value is not particularly limited, but is preferably 0.05 to 0.80.
The IOB value is an abbreviation for Inorganic/Organic Balance, which is a value that indicates the ratio of inorganic values to organic values, and is an index that indicates the degree of polarity of an organic compound.
IOB value is expressed as inorganic value/organic value. Here, for each of the "inorganic value" and "organic value", the "inorganic value" and "organic value" are set according to various atoms or functional groups, for example, the "organic value" for one carbon atom in a molecule is 20, and the "inorganic value" for one hydroxyl group in the molecule is 100. The IOB value of an organic compound can be calculated by integrating the "inorganic values" and "organic values" of all atoms and functional groups in the organic compound (see, for example, Fujita, "Chemical Region", Vol. 11, No. 10, pp. 719-725, 1957).

Representative examples of polar oils include ester oils and ultraviolet absorbers.
Specific examples of ester oils include tripropylene glycol dineopentanoate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, cetyl ethylhexanoate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid esters, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra ... Pentaerythrityl ethylhexanoate, triethylhexanoin (tri-2-ethylhexanoic acid glycerin), trioctanoic acid glycerin, triisopalmitic acid glycerin, triisostearate trimethylolpropane, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, trimyristate glycerin, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceryl amide, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

Examples of UV absorbers include a wide range of highly polar oil-based UV absorbers that are generally used in cosmetics, and are not particularly limited. Examples include benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, β,β-diphenylacrylate derivatives, benzophenone derivatives, benzylidene camphor derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranil derivatives, imidazoline derivatives, benzalmalonate derivatives, and 4,4-diarylbutadiene derivatives. Specific examples and product names are listed below, but are not limited to these.

Examples of benzoic acid derivatives include ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA (e.g., "Escarol 507"; ISP), glyceryl PABA, PEG-25-PABA (e.g., "Uvinal P25"; BASF), and diethylaminohydroxybenzoylhexyl benzoate (e.g., "Uvinal A Plus")

Examples of salicylic acid derivatives include homosalate (Eusolex HMS; Rona/EM Industries), ethylhexyl salicylate (e.g., NeoHeliopan OS; Herman & Reimer), dipropylene glycol salicylate (Dipsal; Skel), and TEA salicylate (NeoHeliopan TS; Herman & Reimer).

Examples of cinnamic acid derivatives include octyl methoxycinnamate or ethylhexyl methoxycinnamate (e.g., Parsol MCX; Hoffmann-La Roche), isopropyl methoxycinnamate, isoamyl methoxycinnamate (e.g., Neo Heliopan E1000; Herman & Reimer), cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, di-(2-ethylhexyl)-4'-methoxybenzalmalonate, and the like.
Examples of dibenzoylmethane derivatives include 4-tert-butyl-4'-methoxydibenzoylmethane (eg, Parsol 1789).

An example of the β,β-diphenylacrylate derivative is octocrylene (eg, "Uvinal N539"; BASF).
Examples of the benzophenone derivative include benzophenone-1 (e.g., "Uvinal 400"; BASF), benzophenone-2 (e.g., "Uvinal D50"; BASF), benzophenone-3 or oxybenzone (e.g., "Uvinal M40"; BASF), benzophenone-4 (e.g., "Uvinal MS40"; BASF), benzophenone-5, benzophenone-6 (e.g., "Helisorb 11"; Norquay), benzophenone-8 (e.g., "Spectra-Sorb UV-24"; American Cyanamid), benzophenone-9 (e.g., "Uvinal DS-49"; BASF), and benzophenone-12.

Examples of benzylidene camphor derivatives include 3-benzylidene camphor (e.g., "Mexoryl SD"; Symex), 4-methylbenzylidene camphor, benzylidene camphorsulfonic acid (e.g., "Mexoryl SL"; Symex), camphor benzalkonium methosulfate (e.g., "Mexoryl SO"; Symex), terephthalide discamphorsulfonic acid (e.g., "Mexoryl SX"; Symex), polyacrylamide methyl benzylidene camphor (e.g., "Mexoryl SW"; Symex), and the like.
Examples of phenylbenzimidazole derivatives include phenylbenzimidazole sulfonic acid (eg, "Eusolex 232"; Merck), and disodium phenyldibenzimidazole tetrasulfonate (eg, "Neo Heliopan AP"; Herman & Reimer).

Examples of triazine derivatives include anisotriazine (e.g., "Tinosorb S"; Ciba Specialty Chemicals), ethylhexyl triazone (e.g., "Uvinal T150"; BASF), diethylhexylbutamido triazone (e.g., "Uvasorb HEB"; Sigma 3V), and 2,4,6-tris(diisobutyl-4'-aminobenzalmalonate)-s-triazine.

Examples of phenylbenzotriazole derivatives include drometrizole trisiloxane (e.g., "Silatrizole"; Rhodia-Chemie), methylenebis(benzotriazolyltetramethylbutylphenol) (e.g., "Tinosorb M"; Ciba Specialty Chemicals), etc.

Examples of anthranil derivatives include menthyl anthranilate (eg, "Neo Heliopan MA"; Herman & Reimer).
The imidazoline derivatives include ethylhexyldimethoxybenzylidene dioxoimidazoline propionate.

Examples of benzalmalonate derivatives include polyorganosiloxanes having benzalmalonate functional groups (for example, polysilicone-15; "Parsol SLX"; DSM Nutrition Japan).
An example of the 4,4-diarylbutadiene derivative is 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene.
The polar oil (C) may be used alone or in combination of two or more kinds.

The amount of polar oil (C) is 30% by mass or more, preferably 30 to 50% by mass, more preferably 32 to 48% by mass, and even more preferably 33 to 45% by mass, based on the total amount of the oil phase. The amount of UV absorber contained in the polar oil is preferably 40% by mass or more, preferably 50% by mass or more, and more preferably 60% by mass or more, and all of the polar oil may be UV absorbers. By using a polar oil content of 30% by mass or more, the skin can be made to look plumper and smoother, and the skin protection effect can be further enhanced. Furthermore, by using a content of 50% by mass or less, stickiness can be further suppressed.

(Static Viscosity of Cosmetics)
The static viscosity of the cosmetic of the present invention is 13,000 mPa·s or more, more preferably 14,000 to 50,000 mPa·s, and even more preferably 15,000 to 40,000 mPa·s. When the cosmetic has a static viscosity of 13,000 mPa·s or more, the stability of the cosmetic can be ensured even if the cosmetic does not contain a surfactant and contains 30% by mass or more of polar oil relative to the total amount of the oil phase.

In addition to the above-mentioned components, the cosmetic of the present invention can contain one or more of the following components that are commonly used in cosmetics and quasi-drugs: moisturizers, powdered components, non-polar oils, liquid oils and fats, solid oils and fats, waxes, higher fatty acids, higher alcohols, sugars, medicines, etc. Examples of components that can be added are given below.

Examples of moisturizing agents include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilot extract.

Examples of powder components include inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, black mica, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, tungstate metal salts, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, etc. , metal soaps (e.g., zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigments (e.g., zinc oxide, etc.); inorganic red pigments (e.g., iron titanate, etc.); inorganic purple pigments (e.g., mango violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, Prussian blue, etc.); pearl pigments (e.g., titanium dioxide coated mica, titanium dioxide coated bismuth oxychloride, titanium dioxide coated talc, colored titanium dioxide coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (e.g., , organic pigments such as Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, and Blue No. 404; Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3, and Blue No. 1; natural pigments (e.g., chlorophyll, β-carotene, etc.), etc.

Examples of non-polar oils include silicone oil, liquid paraffin, squalane, squalene, paraffin, isohexadecane, and other hydrocarbon oils.

Examples of silicone oils include linear silicone oils such as dimethylpolysiloxane, methylphenylpolysiloxane, caprylyl methicone, diphenylsiloxyphenyl trimethicone, and methylhydrogenpolysiloxane, and cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane.

Examples of liquid oils include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, triglycerin, etc.

Examples of solid fats and oils include cacao butter, coconut oil, horse tallow, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan Rice Kernel Oil, hardened oil, beef foot fat, Japan Rice, and hardened castor oil.

Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, whale wax, montan wax, bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, etc.

Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tallic acid, isostearic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).

Examples of higher alcohols include straight-chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, cetostearyl alcohol, etc.); branched-chain alcohols (e.g., monostearyl glycerin ether (batyl alcohol), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, octyldodecanol, etc.).

Examples of monosaccharides include trioses (e.g., D-glyceryl aldehyde, dihydroxyacetone, etc.); tetraoses (e.g., D-erythrose, D-erythrulose, D-threose, etc.); pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, L-xylulose, etc.); hexoses (e.g., D-glucose, D-talose, D-busicose, D-galactose, D-fructose, L-galactose, L-mannose, etc.); sugars (e.g., aldoheptose, heptose, etc.); octose (e.g., octose, etc.); deoxy sugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, 6-deoxy-L-mannose, etc.); amino sugars (e.g., D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); uronic acids (e.g., D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, L-iduronic acid, etc.), etc.

Examples of oligosaccharides include sucrose, gunthianose, umbelliferose, lactose, planteose, isolichinoses, α,α-trehalose, raffinose, lychinoses, umbilicin, stachyose, verbascoses, etc.

Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.); and the like. Examples of amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxylic acid, etc.

Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

Examples of alkylene oxide derivatives include POE(9) POP(2) dimethyl ether, POE(14) POP(7) dimethyl ether, POE(10) POP(10) dimethyl ether, POE(6) POP(14) dimethyl ether, POE(15) POP(5) dimethyl ether, POE(25) POP(25) dimethyl ether, POE(7) POP(12) dimethyl ether, POE(22) POP(40) dimethyl ether, and POE(35) POP(40) dimethyl. ether, POE(50)POP(40) dimethyl ether, POE(55)POP(30) dimethyl ether, POE(30)POP(34) dimethyl ether, POE(25)POP(30) dimethyl ether, POE(27)POP(14) dimethyl ether, POE(55)POP(28) dimethyl ether, POE(36)POP(41) dimethyl ether, POE(7)POP(12) dimethyl ether, POE(17)POP(4) dimethyl ether, etc.

Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediamine hydroxyethyl triacetate, etc.

Examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, etc.

Other possible ingredients include, for example, preservatives (ethylparaben, butylparaben, etc.); skin whitening agents (for example, placenta extract, saxifrage extract, ascorbic acid or its derivatives, tranexamic acid, arbutin, etc.); blood circulation promoters (nicotinic acid, benzyl nicotinate, tocopherol nicotinate, β-butoxy nicotinate, minoxidil or its analogs, γ-oryzanol, alkoxycarbonylpyridine N-oxide, carpronium chloride, and acetylcholine or its derivatives, etc.); These include various extracts (e.g., ginger, Uba, Coptis japonica, Lithospermum root, Birch, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Loofah, Lily, Saffron, Cnidium Root, Angelica Root, Hypericum, Ononis, Garlic, Capsicum, Tangerine, Angelica Root, Peony, Seaweed, etc.), activators (e.g., panthenyl ethyl ether, nicotinamide, biotin, pantothenic acid, royal jelly, cholesterol derivatives, etc.), antiseborrheic agents (e.g., pyridoxines, thianthol, etc.), etc.

The cosmetic composition of the present invention can be prepared by dissolving and dispersing the aqueous phase component and the oil phase component at 70 to 100°C as required, then cooling and solidifying them, and mixing the solidified aqueous phase component and oil phase component using a homogenizer, disperser, or the like.

The product form of the cosmetic of the present invention is not particularly limited, but examples include emulsions, skin care creams, hair creams, liquid foundations, eyeliners, mascaras, eyeshadows, and other emulsion or cream products.

The present invention will now be described in more detail with reference to the following examples. The present invention is not limited in any way by the following examples.

[Examples and Comparative Examples 1 to 4]
According to the formulation shown in Table 1, the aqueous phase components and the oil phase components were dissolved and dispersed at appropriate temperatures, respectively, and then cooled and solidified. The solidified aqueous phase components and oil phase components were uniformly mixed using a disperser to obtain a cosmetic preparation.

[Comparative Examples 5 and 6]
According to the formulation shown in Table 1, the aqueous phase components and the oil phase components were dissolved and dispersed at appropriate temperatures, and then the oil phase components were added dropwise to the aqueous phase components and mixed to obtain cosmetics.

Details of the raw material product names etc. in the table are as follows:
Ammonium acryloyldimethyltaurate/VP copolymer: Aristoflex (manufactured by AVC Clariant Japan Co., Ltd.)
・Dextrin palmitate: Leopearl KL (manufactured by Chiba Flour Milling Co., Ltd.)
- (Palmitic acid/ethylhexanoic acid) dextrin: Leopearl TT (manufactured by Chiba Flour Milling Co., Ltd.)
Glyceryl (behenic acid/eicosanedioic acid): Nomcort HK-G (manufactured by Nisshin Oillio Group, Ltd.)
N-Lauroyl-L-glutamic acid dibutylamide: GP-1 (manufactured by Ajinomoto Co., Inc.)
N-2-ethylhexanoyl-L-glutamic acid dibutylamide: EB21 (manufactured by Ajinomoto Co., Inc.)
Polyamide-8: Oleocraft LP-21 (manufactured by Croda Japan)
Sucrose tetrastearate triacetate: Sugar Wax A-10E (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) Silicone wax: AMS-C30 (manufactured by Dow Chemical Japan Co., Ltd./Dow Toray Co., Ltd.)

(Measurement of static viscosity)
The prepared cosmetic materials were measured using a rheometer (Anton Paar MCR300 rheometer) with a 50φ cone plate under conditions of a gap of 0.5 mm, a strain oscillation angle of 0.1%, a frequency of 1 Hz, and a temperature of 25° C. while increasing the stress.

(Measurement of hardness)
The prepared cosmetic materials were measured using a rheometer (Rheotec Rheometer) under conditions of a pressure-sensitive shaft of 5φ, a penetration speed of 2 cm/min, and a penetration depth of 10 mm.

(Stability)
The prepared cosmetic preparations were stored at 25° C. for one week, after which the condition of the preparations was checked and evaluated according to the following criteria.
A: No liquid seeps out from either the water phase or the oil phase. B: A small amount of liquid seeps out from either the water phase or the oil phase or both. C: Liquid seeps out from both the water phase and the oil phase, and homogeneity is not maintained.

(sticky)
The prepared cosmetics were used by 10 expert panelists and evaluated according to the following criteria.
<Evaluation criteria>
A: 8 or more people felt that it was not sticky. B: 5 to 7 people felt that it was not sticky. C: 4 or less people felt that it was not sticky.

(water resistance)
A sample of each example was dropped at 2 mg/cm2 onto an S plate (5 x 5 cm V-groove PMMA plate, SPFMASTER-PA01), applied with a finger for 60 seconds, and dried for 15 minutes, after which the absorbance (400-280 nm) was measured using a Hitachi U-3500 self-recording spectrophotometer. An uncoated plate was used as a control, and the absorbance (Abs) was calculated using the following formula:
Abs=-log(T/To)
T: transmittance of sample, To: transmittance of uncoated plate. After that, the coating film was immersed in running water for 30 minutes, and the absorbance spectrum was measured again. The substrate remaining rate of the sample was calculated from the absorbance after the water bath relative to the absorbance before the water bath, and its water resistance was evaluated according to the following criteria.
A: Residual rate of 95% or more B: Residual rate of 80% or more and less than 95% C: Residual rate of less than 80% Table 1 shows the evaluation results together with the formulations.

As shown in Table 1, all of the cosmetics in Examples 1 to 4 had a static viscosity of 13,000 mPa·s or more, and therefore had good stability, were not sticky, and had good water resistance, despite containing 30% or more by mass of polar oil. On the other hand, the cosmetics in Comparative Examples 1 to 4 had a static viscosity of less than 13,000 mPa·s, and therefore had poor stability. Note that, because Comparative Examples 1 to 4 had poor stability, evaluation of stickiness and water resistance was not performed. Furthermore, for Comparative Examples 1 to 3, the oil phase gelled by the oil phase gelling agent was not in a state in which the hardness could be measured, so measurements were not performed. Comparative Examples 5 and 6 had a particular stickiness due to the inclusion of a surfactant, and re-emulsification occurred, resulting in insufficient water resistance.

Claims (2)

A cosmetic preparation that does not contain a surfactant or contains a surfactant in an amount of 0.7 mass% or less based on the total amount of the cosmetic preparation,
(A) an aqueous phase including an aqueous phase gelling agent;
(B) an oil phase containing an oil phase gelling agent;
The aqueous phase and the oil phase form a mixture,
The oil phase contains 30 mass% or more of (C) a polar oil,
The aqueous gelling agent (A) is an ammonium acryloyldimethyltaurate/VP copolymer;
The aqueous phase gelling agent (A) is contained in an amount of 0.2 to 4% by mass based on the total amount of the aqueous phase,
the oil phase gelling agent (B) is dextrin palmitate, glyceryl behenate/eicosanedioate, N-lauroyl-L-glutamic acid dibutylamide, or 12-hydroxystearic acid ;
The oil phase gelling agent (B) is contained in an amount of 6 to 14% by mass based on the total amount of the oil phase, and
After storage at 25° C. for one week, no liquid seeps out from either the aqueous phase or the oil phase.
Cosmetics . The cosmetic according to claim 1, wherein the polar oil (C) contains an ultraviolet absorber.